xref: /illumos-gate/usr/src/uts/common/sys/dktp/queue.h (revision 2d6eb4a5)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _SYS_DKTP_QUEUE_H
28 #define	_SYS_DKTP_QUEUE_H
29 
30 #ifdef	__cplusplus
31 extern "C" {
32 #endif
33 
34 struct	que_obj {
35 	opaque_t		que_data;
36 	struct que_objops	*que_ops;
37 };
38 
39 struct	que_objops {
40 	int	(*que_init)(struct que_data *, void *);
41 	int	(*que_free)(struct que_obj *);
42 	int	(*que_ins)(struct que_data *, struct buf *);
43 	struct buf *(*que_del)(struct que_data *);
44 	void	*que_res[2];
45 };
46 
47 struct que_obj *qfifo_create();
48 struct que_obj *qmerge_create();
49 struct que_obj *qsort_create();
50 struct que_obj *qtag_create();
51 
52 #define	QUE_INIT(X, lkarg) (*((struct que_obj *)(X))->que_ops->que_init) \
53 	(((struct que_obj *)(X))->que_data, (lkarg))
54 #define	QUE_FREE(X) (*((struct que_obj *)(X))->que_ops->que_free) ((X))
55 #define	QUE_ADD(X, bp) (*((struct que_obj *)(X))->que_ops->que_ins) \
56 	(((struct que_obj *)(X))->que_data, (bp))
57 #define	QUE_DEL(X) (*((struct que_obj *)(X))->que_ops->que_del) \
58 	(((struct que_obj *)(X))->que_data)
59 
60 #ifdef	__cplusplus
61 }
62 #endif
63 
64 #endif	/* _SYS_DKTP_QUEUE_H */
65